MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 57b1e438ea9864efa7ce4c5f310d039d618d52fa352dcd992d7f042591bf4b74. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Mirai


Vendor detections: 6


Intelligence 6 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 57b1e438ea9864efa7ce4c5f310d039d618d52fa352dcd992d7f042591bf4b74
SHA3-384 hash: dca881be8b9423b7c9cfdfd2f13ba99f1525f9b419321d11f2c89bbf23195aacc3ad13386b5f2d4d56d57dd0099bcf75
SHA1 hash: 48d659b0c03fd53d94ae5743df283deca6305e16
MD5 hash: 27aea885acbc4052488bb7c45184660d
humanhash: seventeen-table-arizona-illinois
File name:s390x
Download: download sample
Signature Mirai
Create hunting rule
File size:399'152 bytes
First seen:2026-09-01 21:16:43 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 6144:bUQdl3QTOyBB2Q2Q17+3WchtsnoRd6558LwxFCO:b5nyBBCQ170hPD65M2IO
TLSH T15284F8CC51B0E3CED064AD32D32579A79967123724837A8C61DEEB7B12F724606B9E31
Magika elf
Reporter abuse_ch
Tags:elf mirai

Intelligence

File Origin
# of uploads :
1
# of downloads :
53
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.30435.LC.UNOFFICIAL
Create hunting rule

Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/af9c26d6-cb36-41d7-b264-56df6516664d
Behavior Graph:
Download SVG
%3 guuid=6f6534ec-1900-0000-e0b3-2d563e090000 pid=2366 /usr/bin/sudo guuid=87e6fbed-1900-0000-e0b3-2d5645090000 pid=2373 /tmp/sample.bin guuid=6f6534ec-1900-0000-e0b3-2d563e090000 pid=2366->guuid=87e6fbed-1900-0000-e0b3-2d5645090000 pid=2373 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/c9d819bd-13b4-4243-a9ae-476a39faca9e
Result
Threat name:
DirtyFrag, Mirai
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1967035
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Attempts to enable/disable Ctrl-Alt-Delete system rebooting
Drops files in suspicious directories
Drops invisible ELF files
Multi AV Scanner detection for submitted file
Sample tries to persist itself using System V runlevels
Sample tries to set files in /etc globally writable
Uses TOR for connection hidding
Writes identical ELF files to multiple locations
Yara detected DirtyFrag
Yara detected Mirai
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1967035 Sample: s390x.elf Startdate: 01/09/2026 Architecture: LINUX Score: 100 34 control.tor2web-relay-fast.onion 2->34 36 sync.softwaremirror.workers.dev 2->36 38 6 other IPs or domains 2->38 40 Antivirus detection for dropped file 2->40 42 Antivirus / Scanner detection for submitted sample 2->42 44 Multi AV Scanner detection for submitted file 2->44 48 2 other signatures 2->48 9 s390x.elf 2->9         started        signatures3 46 Uses TOR for connection hidding 34->46 process4 process5 11 s390x.elf 9->11         started        signatures6 50 Attempts to enable/disable Ctrl-Alt-Delete system rebooting 11->50 14 s390x.elf 11->14         started        process7 file8 26 /var/www/.network-dispatch, ELF 14->26 dropped 28 /var/tmp/.network-dispatch, ELF 14->28 dropped 30 /var/spool/.network-dispatch, ELF 14->30 dropped 32 16 other malicious files 14->32 dropped 52 Sample tries to set files in /etc globally writable 14->52 54 Writes identical ELF files to multiple locations 14->54 56 Drops invisible ELF files 14->56 58 2 other signatures 14->58 18 s390x.elf systemctl 14->18         started        20 s390x.elf systemctl 14->20         started        22 s390x.elf systemctl 14->22         started        24 13 other processes 14->24 signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/57b1e438ea9864efa7ce4c5f310d039d618d52fa352dcd992d7f042591bf4b74
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/57b1e438ea9864efa7ce4c5f310d039d618d52fa352dcd992d7f042591bf4b74/
Threat name:
Linux.Exploit.DirtyFrag
Create hunting rule
Status:
Malicious
First seen:
2026-09-01 21:17:29 UTC
File Type:
ELF64 Big (SO)
AV detection:
8 of 36 (22.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=k6y6iohktbso7j6ojrptcdidtvqy2ux2guw43gjnp4cclen7jn2a._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
linux
Link:
https://tria.ge/reports/260901-z45qqabl5w/
Please note that we are no longer able to provide a coverage score for Virus Total.

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:ELF_IoT_Persistence_Hunt
Create hunting rule
Author:4r4
Description:Hunts for ELF files with persistence and download capabilities
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:EXPL_HKTL_LNX_DirtyFragShellcode_May26
Create hunting rule
Author:Pezier Pierre-Henri (Nextron Systems)
Description:Detects a shellcode observed in dirtyfrag, a local privilege escalation exploit for Linux.
Reference:https://github.com/V4bel/dirtyfrag/tree/master
Rule name:EXPL_LNX_DirtyFrag_ForensicArtefacts_May26
Create hunting rule
Author:Florian Roth
Description:Detects DirtyFrag exploit code POC usage in Linux environments
Reference:https://github.com/V4bel/dirtyfrag/tree/master
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:setsockopt
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:unixredflags3
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Mirai

elf 57b1e438ea9864efa7ce4c5f310d039d618d52fa352dcd992d7f042591bf4b74

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3909407/
  
Delivery method
Distributed via web download

Comments